Chapter 11

I. Multicellular II. Eukaryotic III. Specialized for different functions IV. Have a protein called collagen V. Get energy by eating other organisms- consumers VI. Digest own food VII. Reproduce sexually VIII. Capable of movement

 Vertebrates- animals with a backbone  Invertebrate- animals without a backbone

RRadial symmetry- Body parts are arranged in a circle around the center of the body. BBilateral symmetry- Body parts are arranged the same way on both sides of the body. AAsymmetry- Body parts are not arranged in any particular way.

 When scientists classify an animal`s DNA it is called molecular classification.

 nerve chord  Tail  Pharyngeal pouch

 Flexible  Rod  Extend to the length of a body

 Connects all nerves

 Well developed organisms.

 Have gills and fins  Jawless fish, cartilaginous fish, and bony fish.

 Lack jaws

I. Frogs, toads, and salamanders II. Skeletons and legs III. Smooth, and moist skin IV. Develop lungs V. Live on land

SSkeletons CCartilage

 No cartilage  Grouped together

I. Lizards, snakes, turtles, crocodiles, and alligators II. Water proof skin with scales III. 3-chambered hearts IV. Lungs V. Lay eggs on land

I. 2 legs II. 2 wings III. Ducks, flamingoes, penguins, etc. IV. Make nests to hold eggs V. 4-chambered hearts VI. Beaks VII. Digestive system

I. Whales, dolphins, humans, etc. II. Fur III. Chew with teeth IV. Nervous system V. Produce milk